.flex {
  display: flex;
}
.flex-sb {
  display: flex;
  justify-content: space-between;
}
.flex-ai-end {
  display: flex;
  align-items: flex-end;
}
.ml-10 {
  margin-left: 10px;
}
.mt-10 {
  margin-top: 10px;
}
.mtb-20 {
  margin-top: 20px;
  margin-bottom: 20px;
}
.mt-100 {
  margin-top: 100px;
}
.m-tb-20 {
  margin: 20px 0;
}
.p-lr-12 {
  padding-left: 12px;
  padding-right: 12px;
}
.p-tb-20 {
  padding: 0 20px;
}